CN113314884A

CN113314884A - Plug-in device, inspection system and fuel cell system

Info

Publication number: CN113314884A
Application number: CN202110614545.1A
Authority: CN
Inventors: 郑立能; 郝传璞; 杨敏
Original assignee: Shanghai Electric Group Corp
Current assignee: Shanghai Electric Group Corp
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-08-27
Anticipated expiration: 2041-06-02
Also published as: CN113314884B

Abstract

The invention discloses a plug device, a polling system and a fuel cell system, wherein the plug device is used for connecting the polling system of the fuel cell with a bipolar plate, and comprises: the plug is arranged on the pivot shaft, and the plug can rotate relative to the pivot shaft; the socket is used for being matched with the plug, and the socket is arranged on a rotating path of the plug. The plug is arranged on the pivot shaft, so that the plug can only rotate around the pivot shaft, and the moving dimension of the plug is reduced. The receptacle is positioned in the path of rotation of the plug which can more easily align and communicate with the receptacle during rotation. The plug-in device has simple structure and convenient use, and is convenient for connecting the plug-in device and the socket.

Description

Plug-in device, inspection system and fuel cell system

Technical Field

The invention relates to the field of fuel cell equipment, in particular to a plug-in device, an inspection system and a fuel cell system.

Background

In a fuel cell, bipolar plates, membrane electrodes, seals, etc., are key components thereof. The fuel cell is formed by assembling hundreds of bipolar plates and a membrane electrode in a laminated manner, wherein a single cell is formed between the two bipolar plates by the membrane electrode, and the single cells are connected to form the whole cell stack.

The voltage of the stack is obtained by adding the voltages of the single cells constituting the stack, and the performance of each single cell is an important factor influencing the performance of the fuel cell stack.

In the operation process of the fuel cell, monitoring the voltage of the electric pile is particularly critical, and the voltage of each single cell of the electric pile can be detected by using an inspection system so as to ensure the safe and reliable operation of the electric pile.

Generally, the terminal of the inspection system and the bipolar plate of the fuel cell can be connected together by spot welding, so as to collect the voltage signal of the single cell. When the galvanic pile is disturbed by vibration and the like, the spot welding connection mode has low reliability and is easy to fall off. Meanwhile, in the disassembly process of the fuel cell stack, the welded routing inspection line needs to be disassembled, so that the parts are easily damaged.

The wiring terminal of the inspection system and the bipolar plate of the fuel cell can also be connected together by using the common plug and socket matching mode. The bipolar plate is generally thin in structure, a plug or a socket and the like are designed on the bipolar plate and are difficult to process, and a plurality of inspection connectors are integrated on one plug-in unit, so that a single inspection collection point is inconvenient to replace. In addition, the plug and the socket are small in size, not easy to align and difficult to insert. The wiring terminal of the inspection system is not easy to be connected with the bipolar plate.

Disclosure of Invention

The invention aims to overcome the defect that a wiring terminal of an inspection system is not easy to be connected with a bipolar plate in the prior art, and provides a plug-in device, the bipolar plate inspection system and a fuel cell system.

The invention solves the technical problems through the following technical scheme:

a connector device for connection between a fuel cell routing inspection system and a bipolar plate, the connector device comprising: the plug is arranged on the pivot shaft, and the plug can rotate relative to the pivot shaft; the socket is used for being matched with the plug, and the socket is arranged on a rotating path of the plug.

In this scheme, through adopting above structure, through locating the pivot axle with the plug for the plug can only rotate around the pivot axle, has reduced the dimension of plug motion. The receptacle is positioned in the path of rotation of the plug which can more easily align and communicate with the receptacle during rotation. The plug-in device has simple structure and convenient use, and is convenient for connecting the plug-in device and the socket.

Preferably, the plug has a circular arc surface, and an axis of the circular arc surface coincides with an axis of the pivot shaft.

In this scheme, through adopting above structure, rotating the in-process around the pivotal axis, the arc surface of plug and the distance of pivotal axis are unchangeable to the movement track of arc surface is more stable, and then can be convenient for set up the socket, also can be linked together with the socket better.

Preferably, the outer surface of the plug is a metal contact surface, and the metal contact surface is communicated with the socket.

Preferably, the end of the plug is provided with a guide surface extending from the end of the plug to the side of the plug.

In this scheme, through adopting above structure, the spigot can insert the socket more smoothly.

Preferably, the end of the plug is provided with two guide surfaces, and the two guide surfaces extend from the end of the plug to two side surfaces of the plug respectively.

Preferably, the socket is arc-shaped as a whole, and the center of the arc-shaped socket is located on the axis of the pivot shaft.

In this scheme, through adopting above structure, circular-arc socket simple structure, stability.

Preferably, the socket has a receiving cavity, the receiving cavity is used for inserting the plug, and the plug is communicated with the wall surface of the receiving cavity.

In this scheme, through adopting above structure, the plug inserts the holding chamber, can be more stable, reliable be linked together.

Preferably, the shape of the accommodating cavity matches with the shape of the plug.

In this scheme, through adopting above structure, can further improve the stability and the reliability of intercommunication.

Preferably, the plugging device further comprises a connecting piece, the connecting piece is sleeved on the pivot shaft, the plug is arranged at the end of the connecting piece, and the plug rotates around the pivot shaft through the connecting piece.

In this scheme, through adopting above structure, the connecting piece can make the setting of plug more nimble.

Preferably, the end of the connecting piece is provided with a force application surface, and the connecting piece is pushed to rotate by the force application surface.

In this scheme, through adopting above structure, be convenient for promote the connecting piece through the application of force face, be convenient for to the operation of plug, realize the intercommunication or the disconnection of plug and socket.

Preferably, the force application surface and the plug are respectively positioned at two sides of the end part of the connecting piece.

In this scheme, through adopting above structure, can avoid interfering the plug when applying the effort to the application of force face, improve the security and the reliability of plug.

Preferably, the force application surface is an inclined surface, and the distance between the inclined surface and the axis of the pivot shaft becomes smaller along the direction from the end part of the connecting piece to the pivot shaft.

In this scheme, through adopting above structure, through applying the effort to the inclined plane to can promote the connecting piece, and then make the plug rotate around the pivotal axis, simply, high-efficient, realized the intercommunication or the disconnection of plug and socket reliably.

Preferably, the plugging device further comprises a pushing element, and the pushing element acts on the force application surface to enable the connecting element to rotate.

In this scheme, through adopting above structure, bulldoze the piece and can promote the connecting piece more conveniently, realize being linked together of plug and socket.

Preferably, the force application surface is an inclined surface; the pushing and pressing piece is provided with a pressing surface corresponding to the inclined surface, and the pressing surface is attached to the inclined surface.

In this scheme, through adopting above structure, support the pressure face and act on the inclined plane, can make the connecting piece motion more steady, can reduce the impact of plug to the socket, improve grafting device's life.

Preferably, the connector is made of an insulating material.

In this scheme, through adopting above structure, can avoid the plug to lead to the connecting piece and be linked together with the socket, can improve grafting device's security and reliability.

The utility model provides a system of patrolling and examining, its includes as above plug device, the binding post of system of patrolling and examining with the plug is connected.

In this scheme, through adopting above structure, the system of patrolling and examining is connected through being connected with plug device, can improve convenience, security and the reliability of patrolling and examining the system operation.

The utility model provides a fuel cell system, its includes the pile and as above the system of patrolling and examining, the pile includes a plurality of bipolar plates, the socket is located bipolar plate.

In this scheme, through adopting above structure, it is more stable to patrol and examine the connection between system and the bipolar plate, is convenient for more accurately, monitor fuel cell system reliably, can improve fuel cell system's security and reliability.

Preferably, the electric pile further comprises a positioning rod, the plurality of bipolar plates are stacked on the positioning rod, and the pivot shaft is the positioning rod.

In this scheme, through adopting above structure, can reduce the spare part of fuel cell system, the equipment of fuel cell system of being convenient for.

Preferably, the sockets are provided on both sides of a single bipolar plate.

Preferably, the orientation of the plugs on adjacent bipolar plates is different.

In this scheme, through adopting above structure, can avoid adjacent plug to interfere at the rotation in-process, reduce influence each other.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

according to the invention, the plug is arranged on the pivot shaft, so that the plug can only rotate around the pivot shaft, and the moving dimension of the plug is reduced. The receptacle is positioned in the path of rotation of the plug which can more easily align and communicate with the receptacle during rotation. The plug-in device has simple structure and convenient use, and is convenient for connecting the plug-in device and the socket.

Drawings

Fig. 1 is a schematic structural view of a part of a fuel cell system according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of another part of the fuel cell system in fig. 1.

Fig. 3 is a schematic structural view of a plug of the fuel cell system in fig. 1.

Fig. 4 is a schematic structural view of a socket of the fuel cell system of fig. 1.

Fig. 5 is a schematic structural view of a pushing member of the fuel cell system in fig. 1.

Description of reference numerals:

fuel cell system 100

Bipolar plate 11

Positioning rod 12

Plug-in connection 20

Pivotal shaft 21

Connecting piece 22

Force application surface 221

Push member 23

Abutting surface 231

Plug 30

Arc surface 31

Guide surface 32

Socket 40

Accommodating cavity 41

Detailed Description

The present invention will be more clearly and completely described below by way of examples in conjunction with the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 to 5, the present embodiment is a fuel cell system 100 including a stack including a plurality of bipolar plates 11, and a polling system as described below, in which sockets 40 are provided in the bipolar plates 11. The connection between the inspection system and the bipolar plate 11 is more stable, so that the fuel cell system 100 can be monitored more accurately and reliably, and the safety and reliability of the fuel cell system 100 can be improved. Only a portion of the fuel cell system 100 is shown.

The inspection system includes a plug device 20, hereinafter, the terminals of which are connected to a plug 30. The inspection system is connected with the plug-in device 20, so that the convenience, safety and reliability of the operation of the inspection system can be improved.

The above-described plugging device 20 is used for connection between an inspection system of the fuel cell system 100 and the bipolar plate 11, and the plugging device 20 includes: the plug 30 and the socket 40, the plug 30 is set in the pivotal axis 21, the plug 30 can rotate relative to the pivotal axis 21; the receptacle 40 is adapted to fit the plug 30, the receptacle 40 being arranged in the rotational path of the plug 30. By providing the plug 30 on the pivot axis 21 such that the plug 30 can only rotate about the pivot axis 21, the dimension of movement of the plug 30 is reduced. The receptacle 40 is positioned in the path of rotation of the plug 30, and the plug 30 can be more easily aligned and communicated with the receptacle 40 during rotation. The plug-in device 20 has a simple structure and is convenient to use and connect.

The plug 30 has a circular arc surface 31, and the axis of the circular arc surface 31 coincides with the axis of the pivot shaft 21. In the process of rotating around the pivot shaft 21, the distance between the arc surface 31 of the plug 30 and the pivot shaft 21 is unchanged, so that the movement track of the arc surface 31 is more stable, the socket 40 can be conveniently arranged, and the socket can be better communicated with the socket 40.

The outer surface of the plug 30 is a metal contact surface that communicates with the receptacle 40.

As shown in fig. 3, the end of the plug 30 is provided with a guide surface 32, and the guide surface 32 extends from the end of the plug 30 to the side of the plug 30. The guide surface 32 can be more smoothly inserted into the socket 40.

The end of the plug 30 is provided with two guide surfaces 32, the two guide surfaces 32 extending from the end of the plug 30 to two sides of the plug 30, respectively.

In the present embodiment, the overall shape of the plug 30 is an arc-shaped long column, and the cross-sectional shape of the plug 30 is a quadrangle. In other embodiments, the plug 30 may have other shapes, such as: cylindrical, strip, sheet, etc., and the cross-section of the plug 30 may also be circular, polygonal, etc.

The socket 40 is arc-shaped as a whole, and the center of the arc-shaped socket 40 is located on the axis of the pivot shaft 21. The arc-shaped socket 40 has a simple and stable structure.

The socket 40 has a receiving cavity 41, the receiving cavity 41 is used for inserting the plug 30, and the plug 30 is communicated with the wall surface of the receiving cavity 41. The plug 30 is inserted into the accommodating cavity 41, and can be communicated more stably and reliably.

The shape of the accommodating chamber 41 is matched with the shape of the plug 30, so that the stability and reliability of communication can be further improved.

As shown in fig. 4, in the present embodiment, the cross section of the socket 40 is quadrilateral, and the socket 40 is an arc-shaped cavity as a whole. Two sockets 40 are provided on both sides of the bipolar plate 11, respectively. In one embodiment, the receptacle 40 may be formed by bending a rectangular tube or by splicing together plates.

In other embodiments, the socket 40 may also adopt other structural forms, such as a spring structure, a groove structure, etc., and can be stably and reliably communicated with the plug 30

As shown in fig. 3, the plugging device 20 further includes a connecting member 22, the connecting member 22 is sleeved on the pivot shaft 21, the plug 30 is disposed at an end of the connecting member 22, and the plug 30 rotates around the pivot shaft 21 through the connecting member 22. The connector 22 enables more flexibility in the arrangement of the plug 30.

The end of the connecting element 22 is provided with a force application surface 221, the connecting element 22 is pushed to rotate by the force application surface 221, the connecting element 22 is pushed by the force application surface 221 conveniently, the operation of the plug 30 is facilitated, and the connection or disconnection of the plug 30 and the socket 40 is realized.

The force application surface 221 and the plug 30 are respectively positioned on two sides of the end part of the connecting piece 22, so that the plug 30 can be prevented from being interfered when the force is applied to the force application surface 221, and the safety and the reliability of the plug 30 are improved.

The force application surface 221 is an inclined surface, the distance between the inclined surface and the axis of the pivot shaft 21 is reduced along the direction from the end of the connecting piece 22 to the pivot shaft 21, and the connecting piece 22 can be pushed by applying force to the inclined surface, so that the plug 30 rotates around the pivot shaft 21, and the connection or disconnection between the plug 30 and the socket 40 is simply, efficiently and reliably realized.

The connector 22 is made of an insulating material, so that the plug 30 can be prevented from communicating with the socket 40 through the connector 22, and the safety and reliability of the plug-in device 20 can be improved.

In the present embodiment, the connecting member 22 is in a thin plate shape, and the connecting member 22 is made of an insulating material, which may include rubber, plastic, or the like. The connecting element 22 is also provided with a through hole which is sleeved on the pivot shaft 21. One side of the end of the connector 22 is provided with a plug 30 and the other side of the end of the connector 22 is provided with a bevel. The connector 22 may also be provided with a socket for mounting a plug 30, the plug 30 being connected to the connector 22 via the socket. In other embodiments, the connector 22 may have other shapes.

As shown in fig. 1 and 5, the plugging device 20 further includes a pushing member 23, and the pushing member 23 acts on the force applying surface 221 to rotate the connecting member 22. The pushing member 23 can push the connecting member 22 more conveniently to achieve the communication between the plug 30 and the socket 40.

The pushing and pressing piece 23 is provided with a pressing surface 231 corresponding to the inclined surface, the pressing surface 231 is attached to the inclined surface, and the pressing surface 231 acts on the inclined surface, so that the connecting piece 22 can move more stably, the impact of the plug 30 on the socket 40 can be reduced, and the service life of the plugging device 20 is prolonged.

The pushing member 23 may also be made of an insulating material.

In fig. 5, the pressing member 23 is in a block shape, and one side of the pressing member 23 is provided with a pressing surface 231. In the present embodiment, one urging member 23 is provided with two abutting surfaces 231. The length of the pushing element 23 can be set according to actual requirements, and the pushing element 23 can simultaneously depress the force application surfaces 221 of a plurality of connecting pieces 22, so that synchronous operation of a plurality of plugs 30 can be realized.

In other embodiments, a connecting shaft may be further disposed between the pushing element 23 and the connecting element 22, and the pushing element 23 drives the connecting element 22 to rotate through the connecting shaft, so as to enable the plug 30 to be connected to or disconnected from the socket 40. Of course, other means of connection may be used.

As shown in fig. 1, the stack further includes a positioning rod 12, the bipolar plates 11 are stacked on the positioning rod 12, and the pivot 21 is the positioning rod 12, so that the number of components of the fuel cell system 100 can be reduced, and the assembly of the fuel cell system 100 is facilitated.

The orientation of the plugs 30 on the adjacent bipolar plates 11 is different, so that the interference of the adjacent plugs 30 in the rotation process can be avoided, and the mutual influence can be reduced.

The connection member 22 is thin plate-shaped, and the thickness of the connection member 22 is smaller than the distance between two adjacent bipolar plates 11 of the fuel cell.

As shown in fig. 4, the single bipolar plate 11 is provided with the sockets 40 on both sides, which can reduce the number of parts of the fuel cell system 100 and facilitate the assembly of the fuel cell system 100. As an embodiment, slots may be provided in the sides of the bipolar plate 11 and the receptacles 40 may be provided in the slots. The socket 40 and the bipolar plate 11 may be further welded together as a unitary structure. In general, the thickness of the bipolar plate 11 is thin, and the socket of the general clip design is difficult to manufacture, and the socket 40 of the present embodiment can be well connected with the bipolar plate 11.

A single cell stack can comprise dozens or hundreds of single cells, the plug device 20 of the embodiment is convenient to repeatedly disassemble, assemble and replace, the plug device 20 is tightly connected and is not easy to loosen, and the manufacture is also convenient. The plugging device 20 is convenient to disassemble and assemble, and can greatly improve the installation time of the inspection system of the multi-section electric pile. The plug-in device 20 prevents the bipolar plate 11 near the locating rod 12 from being deformed, thereby avoiding the short-circuit problem caused thereby. The plug-in device 20 has a simple structure and is convenient to manufacture.

As an embodiment, the plug device 20 may be installed as follows.

And (3) stacking: the bipolar plates 11 are stacked by the positioning rods 12, and the connecting pieces 22 are added at the same time, wherein the thickness of the connecting pieces 22 is smaller than the gap between the adjacent bipolar plates 11 after the stack assembly is completed. After the assembly is completed, the plug 30 is inserted into the receiving cavity 41 of the receptacle 40 by pushing the connecting member 22, thereby rotating the plug 30 about the parking lever 12. The positioning rod 12 can be an insulating non-extraction rod, so that the plugging device 20 can be effectively connected with the bipolar plate 11. If the positioning rod 12 needs to be pulled out after stacking, in the process of pulling out the positioning rod 12, the insertion device 20 can effectively avoid the edge deformation of the positioning hole of the bipolar plate 11, so as to avoid the short circuit of the adjacent bipolar plate 11, and the positioning hole is a hole for inserting the positioning rod 12 into the bipolar plate 11.

Fixing: after the connection of the stack to the plug-in device 20 is completed, it is fixed by the pushing element 23 of fig. 5. The length of the pusher 23 to be produced is adjusted according to the number of stacked unit cells. The biasing element 23 may be connected to the end plate by fasteners or other means.

Disassembling the plug device 20: the problem that the fuel cell stack needs to be disassembled and assembled is necessarily met in the process of researching and developing the stack. The prior inspection plug-in connection mode, such as welding or pin connection, has many problems. The plug-in unit in a welding form does not have the capability of repeated disassembly and assembly; the pin type inspection easily deforms the positioning hole through repeated disassembly and assembly to cause short circuit of the bipolar plate. Generally, the insert of the insert type is very expensive to install when the number of unit cells of the stack is large. The plug device 20 of the present embodiment is more convenient to install during use. Because the locating rod 12 is connected with the bipolar plate 11, the inspection system can be installed in place only through one rotation action, the operation is very convenient, and the installation time of the inspection system of the multi-section galvanic pile can be greatly reduced. During the unstacking process, the plug-in connection can also be jointly dismantled together with the bipolar plates 11. When the positioning rod 12 is pulled out, the connector 22 of the plugging device 20 of the present embodiment can avoid the bipolar plate 11 near the positioning hole from being deformed due to its thickness, and thus can avoid the short circuit problem.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides a plug device for being connected between fuel cell's system of patrolling and examining and the bipolar plate, its characterized in that, plug device includes:

the plug is arranged on the pivot shaft and can rotate relative to the pivot shaft;

the socket is used for being matched with the plug, and the socket is arranged on a rotating path of the plug.

2. A plug device according to claim 1, wherein the plug head has a circular arc surface, the axis of which coincides with the axis of the pivot axis.

3. A plug device according to claim 1, wherein the outer surface of the plug is a metal contact surface, the metal contact surface being in communication with the socket.

4. A plug device according to claim 1, wherein the end of the plug is provided with a guide surface extending from the end of the plug to a side of the plug;

5. A plug device according to claim 1, wherein the socket is of a circular arc shape as a whole, and a center of the circular arc shape of the socket is located on an axis of the pivot shaft.

6. The connector device according to claim 1, wherein the socket has a receiving cavity for inserting the plug, and the plug is communicated with a wall surface of the receiving cavity;

7. The connector apparatus of any one of claims 1-6, further comprising a connecting member, the connecting member is disposed on the pivot shaft, the plug is disposed at an end of the connecting member, and the plug is rotated around the pivot shaft via the connecting member.

8. A plug device according to claim 7, wherein the end of the connector is provided with a force application surface by which the connector is urged to rotate.

9. A plug device according to claim 8, wherein the force application surface and the plug are located on either side of the end of the connector;

and/or the force application surface is an inclined surface, and the distance between the inclined surface and the axis of the pivot shaft is reduced along the direction from the end part of the connecting piece to the pivot shaft.

10. The connector device of claim 8, further comprising a biasing element that acts on the force application surface to rotate the connector;

11. A plug device according to claim 7, wherein the connector is made of an insulating material.

12. Inspection system, characterized in that it comprises a plug device according to any one of claims 1 to 11, the terminals of which are connected to the plug.

13. A fuel cell system including a stack including a plurality of bipolar plates and the inspection system of claim 12, wherein the sockets are disposed on the bipolar plates.

14. The fuel cell system of claim 13, wherein the stack further comprises a positioning rod, a plurality of the bipolar plates are stacked on the positioning rod, and the pivot axis is the positioning rod;

and/or the sockets are arranged on two sides of a single bipolar plate;

and/or the orientation of the plugs on adjacent bipolar plates may be different.